Lock



v 1,620,757 March 15, 1927: G FERRIS,

LOCK

Filel Feb. 11, 1 2 v 5 Sheets-Sheet 1 March 15., 1927.

I "1, 20,757 W. C. FERRIS LOCK Filed 1l 1925 5 Sheets-Sheei- 2 March 15 I927.

W. C. FERRlS LOCK Filed Feb. 11, 1926 5 She ts-Sheet 4 March 15, 1927.

. 1,620,757 W. C; FERRIS LOCK I Filed Feb. 1 1926 5 Sheets-Sheet 5 taken 3 Patented Mar. 15, 1927.

UNITED. STATES 1,620,157 PATENT o'FFIce. I

wH nAToN o: rnnnis, or UNIVERSITY CITY, missounnf LOCK.

' Application filed. February 11, 192G.-:Seria1No. 87,568.

This invention relates to looks and with regard to certain more specific features to escapement locks of the combination type.

Among the several objects of the invention may be noted the provision of a lock having combination features and operable to open by pressure upon a series of buttons or the like; the provision of a lock of the type described which is completelyinoperable to open .when certain false movements are made with regard thereto; the provision of a lock of the type described requiring the working of a particular combination for opening but which combination may readily bechanged after the lock has been put'into use; .theprovisionof a device of the type described employing improved clearing means; and the provisionof a lock 1 of the type described which may be ruggedly and economically fabricated and readily applied to :various structures requiring a locking feature. Other objects will be in part obvious and in partpointed out hereinafter.

The invention accordingly comprises the elements and combination of elements, features' of construction, and arrangements of parts which will be exemplified in the structure hereinafter described, and the scope of the application of which will be indicated in the following claims.

ofFig. 3;

Fig. 5 is a lateral section taken on'line 5-5 of Fig. 8;

Fig. 6 is a taken on line 66 of Fig. 8; i

Fig. 7 is a fragmentarysection similar to Fig. 3 showing the'lock completely cleared or reset and ready for reopening;

, Fig. 8 is a view similar to Fig. 7 showing certain parts in opening position.

.;Fig. 9 s a view similar to Fig.7 a

longitudinal vertical section shows certain parts in anon-opening position after a, false setting of the combination Fig. 10 is a vertical longitudinal(section taken on line 1010 of Fig. 8;

F g. 11 is a vertical lateral section taken on l1ne11 11 of Fig. 7 but shows a locked position in solid lines;

Fig. 12 is a side elevation of a modified form of, escapement bar;

for the assembled bar shown in Fig. 12;

Fig. 14 is a vertical lateral section taken on line 141 -14 of Fig.3; I Fig. 15 1s an enlarged side elevation of the resetting mechanism shown almost in resetting position; f Fig. 16 is a plan' view of the parts shown 1n F1g.'15;

Fig. 17 is a plan viewof atumbler and releasing bar assembly;

Fig. 18' is a side elevation tr the parts shown in Fig. 17

. Fig. 19 is an enlarged sectionjtaken on line" 19- 19 of Fig. 18;

Fig. 20 is an enlarged'front elevationlof an escapement mechanism; and, .F 1g. 21 1s a plan view of Fig. 20.) Similar reference characters indicate corresponding parts throughout the several viewsofthe drawings. Referring, now more particularly to Fig.

.1, there is illustrated asteering wheel W.

This -wheel is mounted' upon a conventional steering post P by means of the usual key and taper combination. Around the post Fis formed the conventional tube T reaching to a point within a recess R of the hub K H of said wheel. The wheel W, hub H and post P ,rotate independently of the tube T which is'st'ationary. The edges of the recess R are machined as a crown portionC. I

The conventional mechanical steering combination above described will serve hereinafter as an example of one. of the various possible devices to which the present im proved lock may be applied for locking purposes.

. The lock application, (Figs. -1 to 11) comprises a base 1. to which is heldi side walls 3 and an end plate .5 for enclosing purposes. The

proper, as distinct from its box-likestructure thus I formedis closed at v its oppositeend eitherv by a wallgsimila'r to the plate '5, that is,

when the lock is used for general purposes, orby a form of flange suc a ndi at a? num ral? i l th P esv e5 Fig. 13 is a side elevation of a certain. part I ent applieationzoj'f said leek. .Therflange 17 forms an integral part of a ring member 9formed around and fastened to the said steering wheel tube {The .-.member .9 is preferably fastened to the tube T by means of a set screw 11, or like fastener.

The boXlike structure thus formed is provided with a oover 51 3. flll of the walls thus far described are provided with proper drive pins-or other faStene-rs; and alignment pins. pairof ela-mpi ng screws serve to hold the-cover13 in'place.

The interior of the y 10th is provided with two -bearin-g walls "17 and 19, located L'rearwartl ly and forwardlyerespectively "These walls 17' and 19 sli'dably support (from front to rear) pair of ese-apement" bar-s -21 and 23, a safety bar'25 and ailateh bar 2'7. @hese' four bars 21, 23, 25 and 27 -areprovide'd with laterally arranged pins 29 ahead of -the said frent bearing wall 19. Springs .31 reacting between said pins '29 and-said wall 1 9; and formed loosely around their respective bars,- serve to press the barstoward the front end of the lock, thatis,"toward;the plate b. *Proper apertures in the walls 17-a-nd 19 for the respective bars permit-the said slidable movement.

At their front ends the said springvpresse'd bars 21, 23, 25121Hd27 normally engage a cross member 33 (see also Figs. "15 and 16) that is they engage the member inSm'rhen the lock is open or being reset y'to locking position. "The-said engagement is merelyby abutment. i

The cross =member' 33 is a component memberof a resetting orc'learingbar '35 which is slidably "heldin van aperture of :the wall 5. The member-83 'an'd' bar'35- are also s'lidably supported rearwardly by means of guide pins *37. "The-rodsor'pins 37 are slidv ablysupporte'cl at-and-through the front wall IS-andareprovided with cross pins 39 simila'rito -:s aid pins 29 of the escapement and safety bars. ,JSprings tlflocatetl I on the rods 37 between the cross pins and the wall 19 have' a tendency to "force'the-1'esetting mehanism forwardly, regardless of whether saiclba-rs 21, 2-3,-2-5-and 27 follow'or not.

Horizontally ap'ivoted ito the front wall 19 at *three downward points 48 is a tumbler 45. This tumbler comprises a 'frame '47 which is pivoted as described, and which carriesa: set o'f four tumbler wheelsrlfi. The provision of four wheels "is an example of only oneofany number of wl1eels,that niight be usedras wilt-hereinafter :be made-clear.

Three =of-tlre tumbler wheels 49 :are "formed directly beneath the; lower surface o f the salt escapement bars $21 and 23 and the said safety har The other fourth wheel 49 is plaeetl in -a position "that would be sunder a tlriirtl escapement b-an-if such were arsed to change {the icombinati'on of gth'e "look at anytime. (Figsfito 10, 1:7 V

downwardly by means of a tension coil {spring 53 attached to said rod at one of its ends and the plate 1 at its other end. When the'lock is inlocked position this rod 51 is not drawn downwardly despite the tension of the spring $53. This is because *the} three active rollers 5 bear upwardlyagainst the lower is u'rfaoes of theeseapement and safety bars 21, 23 and 2 5 respeetivly. It will be noted from -Fig. I'i'ithat none =ofthe rollers 19 are in direct alignment with theireach rod 51. They are however di1eotly i1ralignment with'the i'espeetive'iba'i-s upon w-"liioh they ride.

Referring Y agai n {to Fig. 4 1 it may be-*notetl that 'theQrear end-- of the reach rod 1-is provided with an iupward-ly extendingd-qg' 'th pivoted thereto (see also F'igs. 17 to *19). The dog 5-5 is'held in -a forward position bymeans o'fa rearward-leaf-spring57; Elise spring "57 is made 'fast'tto'zthereanend of the reach rod ?51-antl*tends -to -press"the dog forwartllyQ A'stop 59aion' sai'd-" dog prevents its "being positioned *any farther forward :thanindicated" in Figs. 4: and 17 =to 19. Thisfdog '55 is adapted 'to engage adownwardly formed 'notch 60 in the latchibar 27 when said rollers 49 ride-on th'elower surface of their respective bars 21, 23, and' 25, that is, when the :reach 'rod 51 is 'in an upward position. The notch GO-df the lateh bar 27 is so placedlongitudinally that the said engagement "between it and the dog 55 takes place only when the lateh bar '27 i is in-its extreme 'rearward o'r'lookejdgposition illustrated in Fig. 4. The spl-ing -Bl on the latch-bar 27 is then-oompletely eompressed.

At its forward end -the latch har "27 'h as forn'iedanupwardly extending clog-61. This dog =61 -en gages the erosssmeni-ber 33 of the resetting member 35 at certain movements of the resetting meniber. It will be :seen from the above Fig. that in the 110111- zontal positionof the tumbler member 47, that is, when the rol-lers 49 rid'e on 'the underside 'ofatheir respective "bars, that :the latch bar 27 is held in looked position by the dog 55. The last statement' holds "true if the latch bar 27 has been returned :to a position such that the dog 55 may engage the notch '60. The :return event is accoinplished by rearward movementeof the resetting bar. fih'e flog under action of its spring 57 acts as n pawl forithenote'h of the latch barfl r'.

to -pci:i11it ;dep1ession: -of-tlre reach rod 51 so that the-tlog 5 5 may-clea'iv'the notch 60, notC'hes-l63,-('5 antl fif are formed on'the bottom surfaces ofssaid hars 2'1, 28- and 25 respectively. These' notchesare tor-metal atgpretil determinedpoints on the escapem-ent and safetybars. Hence if the said bars 21, 23- and 25 are correctly positioned forwardly I (from their Figs. 3 and'positions) then-the a tumbler rollers49 'willengage with said notches upwardly. This will permit depression of said reach rod 51 under action of the tension spring whereupon the 'dog 55 will be withdrawn from its notch 60 in the latch bar 27 Now, if the resetting mechanism is in'itsforwarfdymsition, then: it

' is evident that'the latchbar 27 may spring forwardly under action of its spring 31.. Hence a latchiassociated with a, latch .bar (to be described) will be permitted to open under certain conditions. 7

In Figs. 12 and13 are detailed means forreposition'ing the said notches 63, and

67 at the forward ends of the escapeinent and safety bars. The construction is'one n whichthe front low-er portions of the said bars are rectangularly cut out to receive the notclrtherein shifted from the position shown for it in the block 69 of .12. i It is evident that after a lock has once been constructed, certain changes in the combination hereinafter to be 'd-escribed, can readilyb-e made by substituting various blocks such .as thoseindicated at '69 and 69 The change in structure at said blocks may be readily made without disassembling the lock itself In order to'permit escapenient action of the escapement bars 21 and 23, so that the notches 63 and 65 thereof respectively, may align with the tumbler wheels 49 (whereby the lock may be opened) certain .e'scapement pawls 71, 72 and 74: are providedtsee Figs. 3,, 6, 20 and 21). These escapement pawls are positioned on certainof a group of pressure bars now to be described. v i

Passing slidably through apertures in the upper'cover 13 of the lock are nine pressure pins orbars. Six of these pins or bars com prise safety pressure pins or bars73." The other three comprise escapement pressure pins or bars 75. All of said bars 73 and 75 are provided at their upper ends (outside of the cover 13) with'keys orbuttons 77. The buttons 77 are arbitrarily lettered or numbered for the purpose of indentification by one who is to have authority to open-the look (see Fig. 1'). In ef'fect the'six 7 safety pressure bars and keys'therewith com prise false opening means, which if inadvertently mani} ulated, will completely "prevent opening of the look even though acorrect combination is thereafter negotiated by the operator. V I

Referring now to all of the bars'v'73- and-75 (Figs. 3 and 6) it will be noted that attheir lower end each one comprises a socket 79 1 adapted to sli'dably engage properextensions 81 formed with the bottom plate 1." Above the sockets7 9, cross pins 83 in the pressure bars areadapted to receive the reaction of 1 0- 85 T10 orni qtr a' tq| 1 spim s 1c spim s oaieac a ains can bottomplate 1 and tend to hold the )ressure bars 73 and 75 in normal upward position".

The upper movement of the safety pressure.

bars is limited at the cover 13 by certain cross rods 87. These. rods 87- have other functions which will also be made clear hereinafter. The upper movement of the escapement bars .75 is limited byabutment ofcross pins 89 against the said cover 13. The pins 89' have a fo-rc'e -fit with the pressure bars 75.

Referring now more particularly to the es capement pressure bars 75 (Figs. 3, 6, 20 and provided with a certain'escapement mecha- 21) it may be'seen that each of saidbars is nism. One of the bars 7 5 located forwardly between the escapement' bars 21 and 23 is provided with "a compound mechanism 71 illustratedmore' particularly in Figs. 20 and" 21. This mechanism comprises a rigid cross member 91 formed at a point on the bar 75 such that its elevation is just above that of the uppersurfaces of thees'capement bars 21 and 23 when the pressure bar 25 is in its normal upward position. Extending forwardly from the pressure bar 75 are two arms 93 bea tween which are pivoted sidewardly extending wings 95 and 97. It will be noted that the wing 95, has a forked pivoting member 99while thewing 97 has a single legged pivoting member 101. The said pivoting members 99 and 101 are both adapted to swing on a pin 103 between the arms 93 and have spacebetween them for theprovision of a' spring 105. Thespring 105 is fastened to,

each of the wings 95 and 97 and i s'adapted to normally holdthe wings 95 and 97in the positions indicate'd in Figs. 20 and 21. Flat portions 107 prevent the wing 95 from being thrown farther forwardly and a flatportion 109 prevents the wing 97 from being so thrown. The port1ons107 and 109 comprise a part of the front'surface of the pressure bar 75. Cut into the said pressure bar.

75are twonotches 111 adapted to permit rearward movement of the wing 95 with its pivoting portions 99. Betweensaid notches 111 is cut'a third notch 113 adapted to permit rearward movement of the other wing 97.-

Each of the wings 95 and 97 if pressed rear wardly reacts against the tension of the" spr1ng1105. The wings 95. and 97 are located at the same. level and intersect in elevation certain projecting portions or lugs'll, 115,

117, 119, 121 and 123 of the escapemfil b The escapement bars; 21 and 22 have formed sidewardly therefrom the lugs 114,

115, 117 119, 121, and 123. These lugs are placed at certain predetermined lpOsltlDllS longitudinally of the bars 21 and 23. The r exact position is a matter of choice depending upon particular combinations that may.

be desired for opening the lock. Now if 7 pressure bar 75, such as the forwardly placedone between the escapement bars and 23 is left in its normally elevated position, then one of the wings 95 or 97 may engage one of the lugs such as lug 114 ofsaid escapement bars 'asthe escapement bars are pressed forwardly, or each of both wings may engage a lug. This last named contingency is not shown. Thefirst named one is shown in Fig. 3.

Now, if the said forward pressure bar 7 5 is depressed 3), then the upper cross member 91 will pass in behind the lug 114 while and before the wing 97 passes from in front thereof. Hence the escapeinent bar 23 can escape to a position such that the next lug-115 thereon collideswvith the now depressed cross piece 91. The escapement bar moves under action of its spring 31.

Next, if the pressure bar 7 5 is released it will rise and before the piece 91 disengages the lug 115, the wing 9? will againbein an intersecting position therewith in elevation. Hence as the pressure bar 7 5 reaches its final elevated position, the escapement bar 23. moves another slight increment whereby the lug 115 engages the wing 97 as did the lug 114 previously. This action gives a new escape position for the escapement bar 23.

It may be noted that the action traced in the last paragraph could take place simi larly between the wing 95 and lug on the other esc'apement bar 21. However, the bar 21Vis (according to Fig. under control for the time being of a ri ght hand wing of another pressure bar actin'g on thelug 123 of said escapement 21. The explanation of the action of the pressure and escapeme'nt bars has now been given by using the said double winged bar 7 5 as ex ample. It is evident that it'is not necessary to provide a pair of wings such as .wi'ngs 95 and 97, but thatonly one might be use for use on only one escapenlentbar. lfiurthern'mre, only one Wing might be employed without the use of the cross piece 91 if the last of a series of lugs on an escapement bar. is being dealt with. It is also evident that in any casaaiftei' the es: capement bars 21 and 23 are in a forxvard position, that return of said bars 21 and 23 can be made from the resetting mechanism because the rea'rwardly ratcheting win-gs such as wings 95 and 97 are all that oppose such 'lfescttlil g, when a reset is made the pressure bars 75, are in their normal upward position. As the escapement bar lags strike the (said wings, such as 95Fan'd 97,,thes'e wings move rearwardly and permit of the lugs. 'The exatrequire'd sequence ofpressnres on the bars 75 ror. the presentembodiment will later be "made; clear.

itsjprevious'ly stated; the. safety pressure. bars 73 areaprovided 'with cross pieces 87. Each of these "pi'ec'eSFST extends latera-{llyfto bar is normally held in its Figs. 7, '8 and 11 position. In such position the lower "notch 67 of the safety lba'r is in a position to receive its respective tumbler wheel 49., that is if the notches 63 and 65o'f t e e'sca'p'e'ment bars arein a position to receive their respective wheels 49. If however, any, some, or all of the safety pressurebarsv are depressed nomtheir --rjespective buttons, the pawl 131 will be rotated from its notch 133 and the safety bar 25 'will spring forwardly to disali'gn its notch fi'i with its respective tumbler wheel 49. The result is. that the tumbler 45 can 'nevenbe moved to disengage the latch bar untilv the lock 'is again reset Or cleared, even thqagh correct pressure combination is negotiated on the remaining escapement pressure bars.

The resetting mechanism 's'sjis externally provided with a push button 137. Within the box, said mechanism provided with means for pre enting only a partial reset.

The upper surface of the device, 35 is. notched at numerals 138 in a rearwardly sloping manner. I A pawl 139 is lpivotedjrustabov e the member 35. An over-centering spring 140 tends to normal-1511mm the nose of the pawl in contact with'the notches 138.v Hence after rearward movement *of the reset device 35 has been started, said moueine'nft must be completed before the button 137 will again spring out. As said movement is com l'ete'd (rig.- 15) the mass 141 or the pawl 11 9 engages a high portion on the.

device 35. This action "sets the over-cen ering spring 140, over center and the pawl is pulled up against 'astop .145 where it is held. Hence when the Button 137 is releasedafte r completefpr'essure tl i'ereoif, the device 35 may make a return with :saidbutton, in so. far as the pawl 139 is held, away frointhe notches by the spring 140., .As soon. asithedevice 35 completely returns, then a nose 147 located rearwardly of the rack of notchesl38 en-' person trying to open the lock and toy prevent an authorized person from unknowingly only partially resetting before a combinatlon operation is attempted. If a proper reset is P not made, the prescribed combination (the one an authorized person knows) will not open the lock.

Complete operation of the look will now be described independently. of a particular application thereof. The particular pressure combination requiredto open the illustrated embodiment of the lock will be employed. The three pressure bars 75 will be given supplementary designations, namely X, Y and Z (see buttons of Fig. 1). The

correct combination of pressures to be used ison XZZ in order.

many more complicated combinations 'be- .cause it readily adapts itself to purposes of illustration. I 7

First, the device will. be considered to have been in locked position and then tampered with. It is still locked but certain of the escapement bars and the safety bar may have been permitted to move under button pressure. Hence .the first operation would normally be to press the button 137 in orderto clear the mechanism and put it into zero or starting position. starting posit-ion is reached is indicated to the experienced authorized operator by the fact that the button 137 will then spring out to its normal position, otherwise not.

i Fig. 3 illustrates the pos tions 'of various,

parts just prior to the springing back of the button 137 into its normal outward position, that is, the figure illustrates events with full pressure on the button'l37Q It maybe seen that thecross member 33 of the clearing mechanism 35 has 3 pressed the escapement bars 21 and 23, the safety bar and the latch bar 27 as far back as theywill go againsttheirfspring pressures. This action, as far as the escapement bars 21 and 23 is concerned, has caused their lugs 123 and 114 respectively to be notched inbehind the movable ratchetingwings of the escapement mechanismslocated on the escapement pressure bars of buttons X and Z.' The escapement bars 21 .and 23 are therefore held intheir rearward positions by means of said escapementmechanisms. The safety bar 25 Fig. 3). has been pushed-b-aclruntil its notch 133 is locatedsome'distance behind.

Hence only a complete This is a relatlvely SHIIPlQCOIDblDLtlOIl and 1s chosen from The time at which.

the lug or dog 131. The lug 131is now pressed leftwardly against the right side of said bar 25. The releasing'rod 125 is in an upward pos'ition. None of the safety pressure bars or stems 73 are depressed. The

pawl 139 'hasengaged'a high portion 143' of notches 138 by the actionof'the over-centering-spring 140 (see also Fig. 15). Hence, if

the button 137 is released the clearing. de-, vice may take its FigurelO position regardless of what isotherwise'done at any of the buttons. Fig.4 indicates positions of parts similar to the position shown in Fig. 3. It'may be noted in said Figure'4 that the latch bar 27 has been returned to.

the device 35 and is now held awayfrom the I such a position that the lug has been able to engage the notch 60, thus preventing forward movement of the latch bar 27. It is to be understood that the latch bar' was put. 1n,1ts Figure 4 position before the clearing I operation was manipulated, that is, atthe last locking operation. The rollers 49 in Figs. 3 and 4 positions are not in alignment with any of thenotches 63, or 67.

' If the button 137 is now. released the mechanism will take up the position'illustrated in Fig. '7, that is, the clearing mechanisin 35 will spring forwardly out of engagementwith all of the bars 21, 23, 25 and 27. The safety bar 25, under action of its spring 31 will automatically-spring for- 'ward until the lug 131'fengages thenot'ch 133. dVhen this engagement takes place the notch 67 of this safety bar is adapted tobe positioned directly over its respective tumbler wheel 49. Hence, ifthis safety'bar is not further disturbed, the lock willbe in a position for opening as soon as the proper escapement events have been permitted at the escapement bars 21 and 23. i

- Next, to open lock firstthe button X is pressed and then the button Z is pressed twice in succession.v This manipulation of the, buttons X and Z causes the following order of events: v V V a (1) The escapement mechanism 74 on the bar 75 associated with the button X permits the lug 123 to passfrom said escapement mechanism, that is, to escape. Q

(2) The lug 121 on the escapement bar 21 strikes the wing 95 of the "escapement mechanism 71 located onthe bar 750011- nected with the button Z. I

upon the lugs 114 and 121 leave the escape ment associated with the button Z. The lug on the escapement bar 23 'is then stopped bythe wing 97, while the lug 119. of the escapement bar 21 is stopped by the wing. of

H the said escapement associated withthe button X. 'This particular positioning of the bar 21 is adapted to setits notch 63 directly over its respective tumbler Wheel 49.,

(4) Next, the button Z-is again depressed,

(3) Now the button Z is depressed, wheres provided with a plurality of notches 36 equal in width to the said slots32 and 34 and adapted to alternately align therewith.

as the steering wheel W may be turned. If therefore, the latch is resiliently pressed upwardly against the lower edge of thecrown piece C and the wheel is turned, then at the first alignment of a notch 36 with the slot 32, the latch 30 will drop into said notch 36 to lock the wheel to the stationary tube T.

A nut N is screwed over the upper rim of "the ring 9 in order to cover any fastenings such as the set screw 11. In order to prevent unauthorized removal of this protecting nut N while the lock is in locked position, said nut Nis provided with a notch 38 aligning with the slots-32 and 34. A lug 40 of the same width as the latch 30 is adapted to engage this notch 38 when the device is in locked position. Hence the nut N can not be removed for purposes of tampering and the like, that is, while the lock is closed.

In the present embodiment the latch 30 is resiliently pressed up against the crown piece C so that the lock may be put in locked position regardless of the position of wheel NV. The wheel may then be turned until the latchautomatically springs into a. notch '36.

"This looks the wheel W. It can only be unlocked opening the device herein described and not by further-turning the wheel as no component of force exists whereby the latch 30 maybe forced from anotch 36, that is, from the wheel itself. I jIn'orderto resiliently mount the latch 30 as above described, thesaid latch bar 27 is bored out at its'rear end by means of a hole 50. This hole 50 is'providedwith a compression coil spring 52 (see Figs. 3, 4 and 14). A stem 54 of the said extension 28 (Figs. 2, 3 and 4) slidablyengages a rearward portion of said bore 50. This stem 54 is pro' vided at the end thereof, which is'inthebore 50, with a T head 56. This T'head is fastened to said stem 54 by ordinary riveting.

means or other conventional manner. The,

cross portion of said T head 56 reach sidewardly to slidably engagesideward slots 58 They also engage one in the said bar 27. end of the said spring 52 which spring reacts against the forward end of the bore 50. By this means the T head 56 is normally held at the rear ends of the slots 58 and the latch 30 held in the positionthatj it would have if the latch bar 27' were made solidly out to saidlatch 30. j The solid construction wouldbe used if no lost motion engagement were desired between thelatch 3'0 andthe notch into which it is pressed for locking. With this improved resilient construction however, the closing operation (pressure on' the button 137) may be accomplished without the" latch 30 immediately dropping into an aligned'slot-such as slot 36. In other words energy is stored in the spring 52when the button 137 is pressed and this energy is released when a slot such as 36 is in alignment to receive a latch 30.- ;The" spring 52 serves to directly putthe lock into locking position when it has had indirect locking movements performed thereon previously,

such as pressing the button 137 upwardly.

The lockingoperation for the device is extremely simple. Taking the case of the automobile for example, after a' stop 'ha-s been made, all'that is necessary for setting the lock is to press the button 137 completely upwardly, regardless of how the parts within the lock' were previously arranged.

The steering wheel WV is then givena slight twistuntil the'latch 30 drops into one of the notches 36 whereby theft of the automobile is automatically prevented. If the operator accidently fails to push the button 137 enough, the pressure of other buttons will have no effect as the cross piece 33 (in a the partially moved position of the device 35) will prevent the bars 21, 23 and 25 from moving. As he will hear no clicking of the escapement, he will then immediately be rect the'resetting d'ifliculty withoutirritat-l ing experimentation at the combination but-' tons. In other words, the full stroke feature on the resetting device 35 clearly indicates an incorrect resetting; from whence it would ordinarily be difiicult to ascertain why the look was not opening, that is, when. operated upon with the proper combination.

In Fig. 3 is illustrated a. conventional electric switch 60 in connection with "the look. This switch is connected inpcircuit with the ignition circuit 62 of the automotive engine and is adapted to permit igniaware that something is amiss, and can corachieved and other advantageous results 'atrying outthe above constructions without departing from the scope of theinvention,.it

is intended that all-matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not ina limiting sense. ,I'claim: I

-1." A look comprising a latch bar, a tumbler adapted normallyto hold the latch bar bars adapted in particular'positions to permit movement of the tumbler 'to[ release said in' locked position,'a plurality ofescapement i latch ar t Ope pos t n, and eseammc i means associated Wltli the escapement bars for permlttmg movemen ofsaid escspeil n bars o sa par ular p t ons, s id merit means being alternately operahle on various of saidescapement bars.

2. A, lock compr s ng a atch. a a tunabler adapted normally to hold theflatch bar bler adapted normally to hold latch in lo p siti n, a plurality Q escep l 'lw bars adapted in particular-positions to permit movement of thetum-bler to release said latch bar to open position, and escapen ent means associated with the .escape nent bars for perm tting movement of sa d es capement bars to said particular positions a safety loar adapted in a normal position to: permit movement of the tumbler to opena d in any other position to prevent it, said other positions of h ety ar bein -br u h bout f m pressure dev ce Similar 11 :999 ationto pressure devices for-capsingthe said P t l r P Si P I s f t lsscaiaeme i bars.

4. A look comprising a latch bar, tumbler adaptednormally to hold the 'latch mam/at 10 21 it pn n, ock d p si io p ur l ty Q 2 capase s adapt in p rt cu a pes 't ens iq-Perm t mov ment of hetumbler tov relea ai la ch a to open posit n,- a sessmen ans or P rmit llse part q lls PQ lF -Q-P' in 7 ins position and set the'lateh barpto its orig pal position. I

'5. A lock comprising a latch bar, t ppbler adapted normally, to; hold the latch; bar in. o k posi me plur l ty Qf ess lpeu'w I a dapted n P rt ar iw tiqns ne t nev nw t of the t m er to elea e ai latch bar to open position escapement mea ns f p rm tt ng a par ic lar p sitioning f the escapement bars, and; resetting means for e rni g the ba s star i mam, said resettingmeans being provided ith a full strokin mechanim whereh a correct- 7 c, .k': v. 1,-

rtmams on of a bars s s-11 d.-

6; A ok. ompr si g-a tumb es atc bar adapted to be released to IDOMQlQyJQQVQ- mea t Q 'them bl wipemsn-tm c an ad pte o. more f om. et t a predete ne op n- *PQSi i Q whe eby the mnble v mews tqielease h i th elt, s ety me-Qhan sni'ada-pt t tum rs om-a e P0 149 e-1' not hed a Pe mit a dzua' zm c said n ecl a f eleasin he, tumble ano er new lease pos t on, and-similar p essore operated mea s t Op rat ngbot th s ap mem sit ea' fo eas n h s me i eiwths marshe Bast e r t s-talisma WISH}; QQlRl F- SWQ a. prra iti c13 A eek ompasses t m les latch bar adapted to; b.e. released to movejayinoveman-t 9f the tumble :esefip m 11 m ch ni m adap ed to mor 33 1 1, a set. a. was aimed open p si n; 1 her by th u i l mopes; to release the latch bar, a salfety mechee sm ada ted nq e twmsa' $61? p sse to is sflf ng the tum ler o lote'll 1- relea e posit on; aid-appeasemeeha isi qqmp lsmg Blu a ewesmsnt ar mtqhedi ta Permi a d t mb e eee sa at a predeterminedpositi Il -alid misse o movmgsa eeseer mwt l a d af tym she water ess-a a e bar named; t P rmi a d; umbler mavement bars.

A 9, 12 ompr in -a tumb a lairadapted to be; released to ni ovelgy moirement; otthe, tnmlolerz, Qsoapergent mechanism adapted. to move, fro-111' a sethtola predeterned; we; e iti aw is v if the um le mews to re e se he atch i aaa a sta peel-,

a n. r a ted' o m se pa .05 9 2 chases the Em ems wa no 0 ease p sition, a d cape merit meow o mp siea a el r t saga-lamen b r notched to permit said ti mb ler movement-l at a-P ed@te m} m v ngsa d esce pemant bars ii nt i smk qmp ii na a sa ety it to o c.

osit-io an meansiopret lied to t Hin er o esswQ .iporen ents i leasingmeans releasing means coptrolling the escapepressure of certain other like buttons to I move releasing means controlling the escapebler adapted normally tohold the latch bar in locked position, a plurality of escapement bars adapted in particular positions to per- ,mit movement of the tumbler to release said latch bar to open position, and escapement means associated with the escapement bars for permitting movement of saidescapement bars to said particular positions, a safety bar adapted to permit movement of the tumbler to release said latch bar, means for holding the safety bar in normal position, means for releasing the safety bar from normal position whereby the tumbler is positively prevented from moving.

11. A look comprising a latch'bar, a tumbler adapted normally to hold the latch bar in locked position, a plurality of escapement bars adapted in particular positions to permit movement of the tumbler to release said latch bar to open position, and escapement means associated with. the escapement bars for permitting movement of said escapement bars to said particular positions, a safety bar adapted to permit movement of the tumbler to release said latch bar, means for holding the safety bar the tumbler is positively prevented from moving, means for setting the escapement bars in unescaped positions, the safety bar innormal position and the latch bar to a locked position at a single movement of an operator.

12. A lock comprising a latch bar, a tumbler adapted-normally to hold the latch bar in locked position, avplurality of escapement;

bars adapted in particular positions to permit movement of the tumbler to release said latch bar to open position, and escapement,

prevented from moving, means for setting a the escapement bars in unescaped positions, the safety bar in normal position and the latch bar to a locked position at a single 'movem'ent of an operator, and a resiliently .mounted latch on the latch bar whereby the said bars may be set to the last stated positions independently of a locking position for the said latch.

In testimony whereof, I have signed my name to this specification this ninth day of February, 1926.

WHEATON C. FERRIS. 

